data analysis

Data visualisation helps present in an attractive way information that could be difficult to interpret in the form of a table. Undoubtedly, for many managers, the phrase ‘time is...

Correspondence analysis is a technique often thought of as an alternative to a crosstab (contingency table).

In this article you can find perceptual maps prepared using different normalization methods.

A common task analysts are often faced with is to establish whether there are any relationships between variables and, if there is a, what is the nature of the relationship.

You may not know this but this year is the 217th birthday of the humble pie chart. Its first known, and purposeful, application was the visualisation of the geographical...

When measuring a phenomenon, you need to select the right tool. To measure temperature, you use a thermometer; alcohol content in breath is measured with an alcometer; and weight,...

The standard approach to investigating a single categorical variable involves a few elements.

When it comes to charts ‘less’ is not necessarily better and ‘more’ can often lead to more functional data visualisation.

When stepping outside the domain of distributive and descriptive statistics for individual variables, we usually take interest in correlations between variables.